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$374+ Cheap flights from Seattle (SEA) to London City (LCY)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LCY
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Seattle to London City

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to London City (LCY). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$670
(SWISS)

One-way from

$374
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,028
From Seattle/Tacoma Intl to London City
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One-way flight from Seattle/Tacoma Intl to London City
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Highest demand for flights based on searches. 15% potential increase in price ($147 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Seattle to London City

Cheapest flights from Seattle to London City
Explore the most affordable flight options available from Seattle to London City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This SWISS deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/162:29 pmSEA - LCY
2 stops19h 01mSWISS
Tue 10/77:20 pmLCY - SEA
2 stops31h 16mSWISS
Deal found 6/11$670
This Lufthansa deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/232:20 pmSEA - LCY
1 stop20h 15mMultiple Airlines
Wed 10/89:25 amLCY - SEA
2 stops17h 11mMultiple Airlines
Deal found 6/10$697
This Virgin Atlantic deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/215:35 pmSEA - LCY
1 stop18h 05mVirgin Atlantic
Tue 8/58:10 pmLCY - SEA
1 stop23h 25mVirgin Atlantic
Deal found 6/10$702
This KAYAK deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/162:20 pmSEA - LCY
1 stop18h 05mLufthansa
Tue 9/237:10 pmLCY - SEA
1 stop24h 45mLufthansa
Deal found 6/10$737
This KAYAK deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/303:43 pmSEA - LCY
2 stops43h 27mBritish Airways
Wed 9/107:00 amLCY - SEA
2 stops23h 02mBritish Airways
Deal found 6/10$756
This SmartFares deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/277:35 pmSEA - LCY
1 stop18h 05mAer Lingus
Fri 9/129:05 amLCY - SEA
1 stop16h 45mAer Lingus
Deal found 6/12$769
This KLM deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/101:55 pmSEA - LCY
1 stop13h 45mKLM
Fri 10/249:20 amLCY - SEA
1 stop14h 45mKLM
Deal found 6/11$790

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to London City that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Seattle to London City Airport that are best for you.

Fly from

Seattle

Fly to

London City

Route

Depart

Return

Price

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 9/16

2:29 pm-5:30 pm

2 stops19h 01m

London City

Tue 10/7

7:20 pm-6:36 pm

2 stops31h 16m

$670

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 9/23

2:20 pm-6:35 pm

1 stop20h 15m

London City

Wed 10/8

9:25 am-6:36 pm

2 stops17h 11m

$697

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 7/21

5:35 pm-7:40 pm

1 stop18h 05m

London City

Tue 8/5

8:10 pm-11:35 am

1 stop23h 25m

$702

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 9/16

2:20 pm-4:25 pm

1 stop18h 05m

London City

Tue 9/23

7:10 pm-11:55 am

1 stop24h 45m

$737

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Sat 8/30

3:43 pm-7:10 pm

2 stops43h 27m

London City

Wed 9/10

7:00 am-10:02 pm

2 stops23h 02m

$756

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 8/27

7:35 pm-9:40 pm

1 stop18h 05m

London City

Fri 9/12

9:05 am-5:50 pm

1 stop16h 45m

$769

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Fri 10/10

1:55 pm-11:40 am

1 stop13h 45m

London City

Fri 10/24

9:20 am-4:05 pm

1 stop14h 45m

$790

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Sun 9/7

11:30 pm-12:45 pm

3 stops29h 15m

$374

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 8/4

2:20 pm-4:25 pm

1 stop18h 05m

$430

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 9/2

2:29 pm-6:45 pm

2 stops20h 16m

$432

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 17 results
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Best time to book a flight from Seattle to London City

Have a flexible travel schedule? Discover the best time to fly to London City from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to London City Airport

What is the cheapest time of day to fly from SEA to LCY?

Find hourly flight availability from Seattle to London City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

When flying from Seattle to London City Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in London City by month

Plan your trip to London City by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London City Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London City Airport when rainfall is around 1.6 in.

Temperature in London City by month

Plan your trip to London City by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London City Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing London City

Get insights into the airlines that provide service to London City. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London City. Reviews last updated June 12, 2025.
To help decide which airline to fly from Seattle to London, see what other customers have to say about Delta, KLM and SWISS. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,623 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
652 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Seattle to London City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to London City?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to London City from Seattle. Booking flights from Seattle/Tacoma Intl (SEA) to London City should be relatively easy as there are 0 daily outbound flights to London City from 1 airline.

  • What are the cheapest airlines flying from Seattle to London City Airport round-trip?

    According to our current data, SWISS ($670), Virgin Atlantic ($702), and Lufthansa ($737) offers the cheapest pricing from Seattle to London City Airport.

  • What are the cheapest airlines to fly from Seattle to London City Airport one-way?

    To fly one-way, consider booking your trip with Lufthansa, which is currently one of the cheapest options available, starting at $430. SWISS flights start at $432 while deals on Aer Lingus start at $503 one-way.

  • Can I find deals for flights from Seattle to London City that include hotel bookings?

    Yes. In addition to deals on Seattle to London City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to London City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to London City.

  • Can I find deals for business class flights from Seattle to London City?

    Yes. Cheapflights offers flight deals from Seattle to London City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to London City Airport?

    Currently, April is the cheapest month in which you can book a flight from Seattle to London City Airport (average of $686). Flying from Seattle to London City Airport in July is currently the most expensive (average of $1,046). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Hayes
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Top airline flying from Seattle to London City

Discover the top airline that operate flights from Seattle to London City. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$962Average$1,000FlexibilityNo cancel feeOn-time77%

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